Influence of the MgO/CaO Sintering Additive Ratio on the Optical Properties of YAG:Cr Ceramics

IF 0.6 4区材料科学 Q4 MATERIALS SCIENCE, CERAMICS Glass and Ceramics Pub Date : 2025-01-10 DOI:10.1007/s10717-025-00720-6

A. A. Kravtsov, V. E. Suprunchuk, V. A. Tarala, F. F. Malyavin, E. V. Medyanik, L. V. Tarala, D. S. Vakalov, V. A. Lapin, E. A. Brazhko

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Abstract

The influence of the content and ratio of MgO and CaO sintering additives on the optical properties of YAG:Cr³⁺ and YAG:Cr⁴⁺ ceramic materials was investigated. All samples showed high transparency at 1100 nm (more than 80%). However, in the approx. 340 nm region, the light transmittance values of the samples decreased with increasing amounts of Ca²⁺ or Mg²⁺ ions. The most intense absorption in the range of 750 – 1100 nm after annealing in air was observed in the samples containing the highest value of sintering additives. The absorption of Cr⁴⁺ cations increased with the increase of Ca/Mg content. The optimum CaO content among the investigated samples was 0.12 wt.%. Above this value, additional absorption was observed due to the formation of microdefects. The data obtained by scanning electron microscopy showed that the ceramic samples had a granular structure with grain size ranging from 1 to 10 μm. There were no significant differences in the microstructure depending on the content and type of sintering additives.

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MgO/CaO烧结添加剂配比对YAG:Cr陶瓷光学性能的影响

研究了MgO和CaO烧结添加剂的含量和配比对YAG:Cr3+和YAG:Cr4+陶瓷材料光学性能的影响。所有样品在1100 nm处显示高透明度（80%以上）。然而，在大约。在340nm区域，样品的透光率随Ca2+或Mg2+离子含量的增加而降低。在空气中退火后，烧结添加剂含量最高的样品在750 ~ 1100nm范围内的吸收强度最大。随着Ca/Mg含量的增加，Cr4+阳离子的吸收率增加。所得样品的最佳CaO含量为0.12 wt.%。在此值以上，由于微缺陷的形成，观察到额外的吸收。扫描电镜数据显示，陶瓷样品呈颗粒状结构，晶粒尺寸在1 ~ 10 μm之间。烧结添加剂的含量和种类对显微组织的影响不显著。

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来源期刊

Glass and Ceramics 工程技术-材料科学：硅酸盐

CiteScore

1.00

自引率

16.70%

发文量

审稿时长

6-12 weeks

期刊介绍： Glass and Ceramics reports on advances in basic and applied research and plant production techniques in glass and ceramics. The journal''s broad coverage includes developments in the areas of silicate chemistry, mineralogy and metallurgy, crystal chemistry, solid state reactions, raw materials, phase equilibria, reaction kinetics, physicochemical analysis, physics of dielectrics, and refractories, among others.